A global pact must be signed in Paris in 2015 to avert climate calamity, putting a lot of pressure on the U.N. mega-summit. This year’s talks follows historic agreements to cut emissions by the U.S., China and the EU.

Hotter and less predictable temperatures mean that much of the world’s premium wine regions are now under threat and new ones are emerging. How the wine industry is — and isn’t — reacting says a lot about the future of agriculture.